You close all the doors

You say "The Awakened One said: Life is Suffering. Leave behind this world of grief and return to the bliss of Nibbanna"

You fire your pistol at the zombie for 5 damage. Their flak jacket absorbs 1 point of that damage. They drop to 36 HP.
You fire your pistol at the zombie for 5 damage. Their flak jacket absorbs 1 point of that damage. They drop to 32 HP.
You fire your pistol at the zombie for 5 damage. Their flak jacket absorbs 1 point of that damage. They drop to 28 HP.
You fire your pistol at the zombie for 5 damage. Their flak jacket absorbs 1 point of that damage. They drop to 24 HP.
You fire your pistol at the zombie for 5 damage. Their flak jacket absorbs 1 point of that damage. They drop to 20 HP.
You fire your pistol at the zombie for 5 damage. Their flak jacket absorbs 1 point of that damage. They drop to 16 HP.
You fire your pistol at the zombie for 5 damage. Their flak jacket absorbs 1 point of that damage. They drop to 12 HP.
You fire your pistol at the zombie for 5 damage. Their flak jacket absorbs 1 point of that damage. They drop to 8 HP.
You fire your pistol at the zombie for 5 damage. Their flak jacket absorbs 1 point of that damage. They drop to 4 HP.

You fire your pistol at the zombie for 5 damage. Their flak jacket absorbs 1 point of that damage. They take a Headshot and die.

You clear a body out of the building.

You close all the doors of the building.